DOT Product Approvals - Signaltape® Underground Warning Tape

Decorative image of highway from aerial point of view and the words DOT Product Approvals: Signaltape® Underground Warning Tape

As a manufacturer committed to providing top-tier solutions, we understand the significance of obtaining Department of Transportation (DOT) approvals for our products. Our dedication to quality and safety has resulted in Signaltape® Underground Warning Tape being approved by several state DOTs.

Why DOT Approvals Matter

State DOT approvals signify rigorous testing and evaluation, ensuring that products meet strict standards for performance, durability, and safety. For underground warning tapes like Signaltape®, these approvals can be a testament to their effectiveness in preventing accidental damage to essential utilities during excavation or similar construction activities. By obtaining DOT approvals, we demonstrate our unwavering commitment to providing products that meet and exceed industry standards, prioritizing the safety and integrity of infrastructure projects.

DOT Approvals by State

The following states have approved Signaltape® Underground Warning Tape for Department of Transportation (DOT) projects. For detailed specifications and additional information, please refer to the Approved Products List (APL) or Qualified Products List (QPL) listing.


  • Organization: State of Alaska Department of Transportation & Public Facilities (Alaska DOT&PF)
  • Approval Type: Qualified Product List (QPL)
  • Category: Highway Construction Products
  • Section: 14. conduit marker tape
  • Specification: 660-3.03 14
  • Expiration: 03-28-2027
  • URL:



National Transportation Product Evaluation Program (NTPEP)

In addition to DOT approvals, Signaltape® is listed on the American Association of State Highway and Transportation Officials (AASHTO) NTPEP Datamine list for Unique Patented & Proprietary Products (UP3) as a DOT Submitted Product. The list can be found here.

The purpose of the NTPEP is to help eliminate redundant testing and auditing of products by States to provide cost-effective evaluations for State DOTs.

Build America, Buy America Act (BABA)

In addition to the above approvals and listings, Signaltape® Underground Warning Tape also meets the requirements outlined by the Build America, Buy America Act (BABA).

The Application Process

Behind every DOT approval is a team dedicated to meticulous research, testing, and documentation. At Damage Prevention Solutions, our team has worked diligently to navigate the intricate process of obtaining DOT approvals for Signaltape®. Their expertise, dedication, and attention to detail have been instrumental in securing approvals from various state DOTs, underscoring our commitment to excellence in product development and safety.

Damage Prevention Solutions is continuing to work on the DOT approval application process in other states and looks forward to extending the regions where Signaltape® can be pre-approved for use in DOT projects. In the meantime, we encourage you to take advantage of the DOT approvals already in existence to promote damage prevention for underground utilities.

To learn more about our DOT product approvals or BABA Compliance, please reach out to our Sales Team at

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